The inflammation of a bursa, which is a small, fluid-filled sac at the knee joint, is known as Knee bursitis. The bursa helps in reducing the friction between the bones. The symptoms of this disease include swelling, warmth, tenderness, and redness in the knee area.
The extrapolated prevalence in Japan, is found to be 4,074,656 for two times of 127,333,002 population estimation used. The Knee bursitis in initial stages can be treated by self-care and upon progression can be treated by anti-inflammatory and pain medications. The self-care includes usage of ice and rest. The medication involves aspirin, paracetamol or ibuprofen, corticosteroids and antibiotics. Occasionally, aspiration of the fluid is also required.